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qemu: domain: Allow preserving translated disk type='volume' data into XML if needed
Re-translating a disk type='volume' definition from a storage pool is not a good idea in cases when the volume might have changed or we might not have access to the storage driver. Specific cases are if a storage pool is not activated on daemon restart, then re-connecting to a VM fails, or if the virt-aa-helper program tries to setup labelling for apparmor. Add a new flag which will preserve the translated data in the definition. Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa
parent
4ebb454231
commit
19b1c0d319
@ -7006,7 +7006,8 @@ virDomainLeaseDefParseXML(xmlNodePtr node,
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}
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static virStorageSourcePoolDef *
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virDomainDiskSourcePoolDefParse(xmlNodePtr node)
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virDomainDiskSourcePoolDefParse(xmlNodePtr node,
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virDomainDefParseFlags flags)
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{
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g_autoptr(virStorageSourcePoolDef) source = g_new0(virStorageSourcePoolDef, 1);
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@ -7029,6 +7030,14 @@ virDomainDiskSourcePoolDefParse(xmlNodePtr node)
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&source->mode) < 0)
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return NULL;
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if (flags & VIR_DOMAIN_DEF_PARSE_VOLUME_TRANSLATED) {
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if (virXMLPropEnum(node, "actualType",
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virStorageTypeFromString,
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VIR_XML_PROP_NONZERO,
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&source->actualtype) < 0)
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return NULL;
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}
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return g_steal_pointer(&source);
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}
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@ -7448,12 +7457,22 @@ virDomainStorageSourceParse(xmlNodePtr node,
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unsigned int flags,
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virDomainXMLOption *xmlopt)
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{
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virStorageType actualType = src->type;
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VIR_XPATH_NODE_AUTORESTORE(ctxt)
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xmlNodePtr tmp;
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ctxt->node = node;
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switch (src->type) {
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if (src->type == VIR_STORAGE_TYPE_VOLUME) {
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if (!(src->srcpool = virDomainDiskSourcePoolDefParse(node, flags)))
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return -1;
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/* If requested we need to also parse the translated volume runtime data */
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if (flags & VIR_DOMAIN_DEF_PARSE_VOLUME_TRANSLATED)
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actualType = virStorageSourceGetActualType(src);
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}
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switch (actualType) {
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case VIR_STORAGE_TYPE_FILE:
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src->path = virXMLPropString(node, "file");
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src->fdgroup = virXMLPropString(node, "fdgroup");
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@ -7469,8 +7488,7 @@ virDomainStorageSourceParse(xmlNodePtr node,
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return -1;
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break;
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case VIR_STORAGE_TYPE_VOLUME:
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if (!(src->srcpool = virDomainDiskSourcePoolDefParse(node)))
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return -1;
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/* parsed above */
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break;
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case VIR_STORAGE_TYPE_NVME:
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if (virDomainDiskSourceNVMeParse(node, ctxt, src) < 0)
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@ -7488,7 +7506,7 @@ virDomainStorageSourceParse(xmlNodePtr node,
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case VIR_STORAGE_TYPE_LAST:
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("unexpected disk type %1$s"),
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virStorageTypeToString(src->type));
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virStorageTypeToString(actualType));
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return -1;
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}
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@ -8647,7 +8665,7 @@ virDomainFSDefParseXML(virDomainXMLOption *xmlopt,
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units = virXMLPropString(source_node, "units");
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} else if (def->type == VIR_DOMAIN_FS_TYPE_VOLUME) {
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def->src->type = VIR_STORAGE_TYPE_VOLUME;
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if (!(def->src->srcpool = virDomainDiskSourcePoolDefParse(source_node)))
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if (!(def->src->srcpool = virDomainDiskSourcePoolDefParse(source_node, flags)))
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goto error;
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}
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}
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@ -22335,10 +22353,28 @@ virDomainDiskSourceFormat(virBuffer *buf,
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bool skipEnc,
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virDomainXMLOption *xmlopt)
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{
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virStorageType actualType = src->type;
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g_auto(virBuffer) attrBuf = VIR_BUFFER_INITIALIZER;
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g_auto(virBuffer) childBuf = VIR_BUFFER_INIT_CHILD(buf);
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switch (src->type) {
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if (src->type == VIR_STORAGE_TYPE_VOLUME) {
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if (src->srcpool) {
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virBufferEscapeString(&attrBuf, " pool='%s'", src->srcpool->pool);
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virBufferEscapeString(&attrBuf, " volume='%s'", src->srcpool->volume);
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if (src->srcpool->mode)
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virBufferAsprintf(&attrBuf, " mode='%s'",
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virStorageSourcePoolModeTypeToString(src->srcpool->mode));
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}
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if (flags & VIR_DOMAIN_DEF_FORMAT_VOLUME_TRANSLATED &&
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src->srcpool->actualtype != VIR_STORAGE_TYPE_NONE) {
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virBufferAsprintf(&attrBuf, " actualType='%s'",
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virStorageTypeToString(src->srcpool->actualtype));
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actualType = virStorageSourceGetActualType(src);
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}
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}
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switch (actualType) {
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case VIR_STORAGE_TYPE_FILE:
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virBufferEscapeString(&attrBuf, " file='%s'", src->path);
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virBufferEscapeString(&attrBuf, " fdgroup='%s'", src->fdgroup);
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@ -22357,15 +22393,7 @@ virDomainDiskSourceFormat(virBuffer *buf,
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break;
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case VIR_STORAGE_TYPE_VOLUME:
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if (src->srcpool) {
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virBufferEscapeString(&attrBuf, " pool='%s'", src->srcpool->pool);
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virBufferEscapeString(&attrBuf, " volume='%s'",
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src->srcpool->volume);
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if (src->srcpool->mode)
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virBufferAsprintf(&attrBuf, " mode='%s'",
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virStorageSourcePoolModeTypeToString(src->srcpool->mode));
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}
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/* formatted above */
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break;
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case VIR_STORAGE_TYPE_NVME:
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@ -22383,13 +22411,13 @@ virDomainDiskSourceFormat(virBuffer *buf,
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case VIR_STORAGE_TYPE_NONE:
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case VIR_STORAGE_TYPE_LAST:
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("unexpected disk type %1$d"), src->type);
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_("unexpected disk type %1$d"), actualType);
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return -1;
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}
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virDomainDiskSourceFormatSlices(&childBuf, src);
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if (src->type != VIR_STORAGE_TYPE_NETWORK)
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if (actualType != VIR_STORAGE_TYPE_NETWORK)
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virDomainSourceDefFormatSeclabel(&childBuf, src->nseclabels,
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src->seclabels, flags);
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@ -22408,7 +22436,7 @@ virDomainDiskSourceFormat(virBuffer *buf,
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if (src->pr)
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virStoragePRDefFormat(&childBuf, src->pr,
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flags & VIR_DOMAIN_DEF_FORMAT_MIGRATABLE);
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if (policy && src->type != VIR_STORAGE_TYPE_NETWORK)
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if (policy && actualType != VIR_STORAGE_TYPE_NETWORK)
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virBufferEscapeString(&attrBuf, " startupPolicy='%s'",
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virDomainStartupPolicyTypeToString(policy));
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@ -27512,7 +27540,8 @@ virDomainDefFormatInternalSetRootName(virDomainDef *def,
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VIR_DOMAIN_DEF_FORMAT_STATUS |
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VIR_DOMAIN_DEF_FORMAT_ACTUAL_NET |
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VIR_DOMAIN_DEF_FORMAT_PCI_ORIG_STATES |
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VIR_DOMAIN_DEF_FORMAT_CLOCK_ADJUST,
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VIR_DOMAIN_DEF_FORMAT_CLOCK_ADJUST |
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VIR_DOMAIN_DEF_FORMAT_VOLUME_TRANSLATED,
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-1);
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if (!(type = virDomainVirtTypeToString(def->virtType))) {
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@ -3734,6 +3734,8 @@ typedef enum {
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* post parse callbacks before starting. Failure of the post parse callback
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* is recorded as def->postParseFail */
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VIR_DOMAIN_DEF_PARSE_ALLOW_POST_PARSE_FAIL = 1 << 11,
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/* Parse the translated disk type='volume' data if present */
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VIR_DOMAIN_DEF_PARSE_VOLUME_TRANSLATED = 1 << 12,
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} virDomainDefParseFlags;
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typedef enum {
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@ -3749,6 +3751,8 @@ typedef enum {
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VIR_DOMAIN_DEF_FORMAT_ALLOW_ROM = 1 << 6,
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VIR_DOMAIN_DEF_FORMAT_ALLOW_BOOT = 1 << 7,
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VIR_DOMAIN_DEF_FORMAT_CLOCK_ADJUST = 1 << 8,
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/* format disk type='volume' translated data if present */
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VIR_DOMAIN_DEF_FORMAT_VOLUME_TRANSLATED = 1 << 9,
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} virDomainDefFormatFlags;
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/* Use these flags to skip specific domain ABI consistency checks done
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